Line up the binomials (or any polynomials) as you would for multiplying large numerical values. Following the pattern of number multiplication, start with the right-hand term of the bottom binomial (+4). Multiply this value times both terms of the top binomial. Now move to the left-hand term of the bottom binomial (x).
Answer:
x = ± sqrt(-49)
or x = ± 7i
Step-by-step explanation:
x^2 +49 = 0
Subtract 49 from each side
x^2 +49 -49 = 0-49
x^2 = -49
Take the square root of each side
sqrt(x^2) = ± sqrt(-49)
x = ± sqrt(-49)
We have to complex numbers to solve
x = ± sqrt(-1) sqrt(49)
sqrt(-1) = i
x = ±i *7
x = ± 7i
Answer:
B
Step-by-step explanation
a squared plus b squared equals c squared.
16 plus 144 equal 160.
now square 160
Answer:
4/10 or 2/5 of a mile more.
Step-by-step explanation:
Since the denominators are the same, all you have to do is subtract the numerators.
9-5=10.
Therefore, Alisha hiked 2/5 of a mile further than Joseph.
